<br>用于二氧化碳甲烷化的非贵金属催化剂的研究进展,Molecules

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用于二氧化碳甲烷化的非贵金属催化剂的研究进展
Molecules ( IF 4.2 ) Pub Date : 2024-01-11 , DOI: 10.3390/molecules29020374
Yingchao Cui ₁ , Shunyu He ₁ , Jun Yang ₂ , Ruxing Gao ₁ , Kehao Hu ₂ , Xixi Chen ₂ , Lujing Xu ₂ , Chao Deng ₂ , Congji Lin ₁ , Shuai Peng ₁ , Chundong Zhang ₂

Affiliation

化石燃料的广泛利用导致大气中 CO2 浓度迅速增加，从而导致各种环境问题。为了减少对化石燃料的依赖并减少 CO2 排放，探索利用 CO2 和 H2 作为原材料以获得高附加值化学品或燃料的替代方法非常重要。其中一种方法是 CO2 甲烷化，它将 CO2 和 H2 转化为甲烷（CH4），甲烷是其他化学品的宝贵燃料和原材料。然而，CO2 甲烷化在动力学和热力学方面面临挑战。需要提高反应速率、CO2 转化率和 CH4 产率，以提高过程效率。为了克服这些挑战，开发合适的催化剂至关重要。非贵金属催化剂因其高催化活性和相对较低的成本而受到广泛关注。本文讨论了 CO2 甲烷化反应的热力学和动力学。重点主要在于回顾镍基、钴基和其他常用催化剂，例如 Fe 基催化剂。重点介绍了催化剂载体、制备方法和促进剂对甲烷化反应催化性能的影响。此外，本文还总结了温度、压力、空速和 H2/CO2 比率等反应条件对催化剂性能的影响。还总结了 CO2 甲烷化的机理，以提供对该过程的全面理解。本文的目的是加深对 CO2 甲烷化反应中非贵金属催化剂的理解，并为提高催化剂性能提供见解。通过解决 CO2 甲烷化的局限性并探索影响催化剂有效性的因素，研究人员可以为该反应开发更高效、更具成本效益的催化剂。

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Research Progress of Non-Noble Metal Catalysts for Carbon Dioxide Methanation

The extensive utilization of fossil fuels has led to a rapid increase in atmospheric CO2 concentration, resulting in various environmental issues. To reduce reliance on fossil fuels and mitigate CO2 emissions, it is important to explore alternative methods of utilizing CO2 and H2 as raw materials to obtain high-value-added chemicals or fuels. One such method is CO2 methanation, which converts CO2 and H2 into methane (CH4), a valuable fuel and raw material for other chemicals. However, CO2 methanation faces challenges in terms of kinetics and thermodynamics. The reaction rate, CO2 conversion, and CH4 yield need to be improved to make the process more efficient. To overcome these challenges, the development of suitable catalysts is essential. Non-noble metal catalysts have gained significant attention due to their high catalytic activity and relatively low cost. In this paper, the thermodynamics and kinetics of the CO2 methanation reaction are discussed. The focus is primarily on reviewing Ni-based, Co-based, and other commonly used catalysts such as Fe-based. The effects of catalyst supports, preparation methods, and promoters on the catalytic performance of the methanation reaction are highlighted. Additionally, the paper summarizes the impact of reaction conditions such as temperature, pressure, space velocity, and H2/CO2 ratio on the catalyst performance. The mechanism of CO2 methanation is also summarized to provide a comprehensive understanding of the process. The objective of this paper is to deepen the understanding of non-noble metal catalysts in CO2 methanation reactions and provide insights for improving catalyst performance. By addressing the limitations of CO2 methanation and exploring the factors influencing catalyst effectiveness, researchers can develop more efficient and cost-effective catalysts for this reaction.

更新日期：2024-01-11

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